Type-writing machine.



A. 0. SMITH. TYPE WRITING MAQHINE. APPLICATION FILED 700T. 2a, 1909.

Patented Feb. 1,1910.

UNITED STATES JZATENTR OFFICE.

ALVEUS C. SMITH, OF ST. LOUIS, MISSOURI, ASSIGN'ORIO UNDERWOODTYPEWBIIDER COMPANY. OF NEW YORK, N. Y., A COBFORATION' OF'NEW JERSEY.

TYPE-WRITING- MACHINE,

Specification of Letters Patent. Patented Feb. '1, 1910.

1 Application filed October 23, 1909. Serial No. 524,112.;

To all 'whom it may concern: writing'machin'e. Fig. 2 is acrosssect-ional Be it known that I, ALvnUs C. SMITH, a view showing themechanism in readinesstocitizen of the United States, residing in St.effeetthe simultaneous line-space feed of the Louis, in the State ofMissouri, have intally strip and the release of the pressureventedcertain new anduseful Improvements rolls. Fig.3 is a similar viewshowing'the in T yp'eJVriting Machines, of which the positions of theparts at the end of the linefollowing is a specification. y spacingstroke. Fig. at is .a detail side view 'This invention relatesto thevtally strip showing thepawl in idle position. Fig.5 is mechanism oftypewritin machines, and a top plan view. j more especially toline-spacing devices there- The usual platen. 1 has'an axle'2 journaled5 for. in the ends of a platen frame 3, which also The invention is animprovement upon the supports a tally strip mechanism, comprismechanismshown in patent to H. S. McCoring an auxiliary platen 4 in front ofwhich mack, No. -921,019, issued. May 11, 1909, in is fed a tally stri 5coiling ontoa winding which the tally strip is coiled on a deliveryspool 6 on a r 7 usually .extendl ng be spool and fed onto a windingspool. Such tween'the ends 3 of the platen frame. i The feed isaccomplished by adog or pawl mounttally strip 5 is drawn fromadelivery-spool ed rigidlyfon a link connecting the usual 8 mounted forrotation in a tally strip pressure rolls of the platen with a pressureframe 9. i Y 'roll release key and engaging a ratchet wheel, The usualfrontand rear pressure rolls 10 on the winding spool whenever therelease runvupon the underside of the main platen key is depressed torelease the pressure rolls 1, and are held --yieldingly therea'gainst byfrom the platen. springs 11,an'd released by a finger-ks 12,

The object of the present invention is to pivoted at 13 upon theend-3-bf. the p aten improve the construction of the tally-strip .frame. Alink 14, extending from an' arm feeding devices. I provide means torelease 15 of the ke to a crank 16 on the end of a the pressure rollsfrom the main platen withrock shaft 1;, connects the key and outline-spacing the tally-strip, or to effect rolls. The shaft 17' isprovidedwith flats the simultaneous release of'the pressure rolls orcams 18 to engage arms -1 9 connected and line-spacing of the tallystrip. with the roll carriers20 to release the rolls In carrying outthis, invention, I provide 10 in a well known manner. Depression thepressure roll releasing mechanism with and elevation of the key 12alternately 6 a pawl adjustable into and out of operative leases andrestores the pressure rollslO, the relation with a ratchet wheel on thewinddepression of the key 12 raising the link 14:, ing spool of thetally strip mechanism. and vice versa. When the pawl is thrown out ofoperative To efi'ect the line-space feeding ofthe relation with theratchet wheel, the pressure tally strip 5, I provide a pawl 21 on, therolls can be released and restored, the pawl link'l4 for engagmg aratchet wheel 22 conthen being carried idly on the pressure roll nectedto the winding spool 6, and to permit controlling mechanism. When thepawl is the operator either to release the pressure thrown into use, thetally strip is line-spaced r0115 10 without feeding the tally strip .5,whenever the pressure rolls are released. By or to accom' lish bothresults by the same means of this arrangement, the operator canmechanism,g mount the pawl 21 shiftably release the pressure rolls tosquare the leadon the link 14, asfat 23, so that it maybe ing 'edge of asheet or otherwise adjust it on swung to efi'ective' 'or inelfectiveposition the main platen, or to insert and remove relative to theratchet wheel 22 at will. sheets from the machine at any time, with-Assumin the pawl 21 to be in use, as out line-spacing the tally strip,hence the shown in igs. 1, 2 and 3, the operator, by entries on thetally strip can allbe s aced depressing the pressure-roll release key12; an equal distance apart; thestrip wil pre-. fie ts the elevation ofthe linklt to not sent a neat appearance and waste thereof only releasethe pressure rolls 10 from the will be avoided. 1 platen l which'ermitsrthe adjustment of or In the accompanying drawings, Figure 1 theremovail'an substitution of sheets, but' is a. perspective view of myinvention apalso causes the engpgement' of the pawl 21 plied to theUnderwood type of front strike with its ratchet' w eel 22 to line-spacethe tally sheet 5, the positions of the parts at the beginning and atthe end of such stroke being illustrated in Figs. 2 and 3.-respectively.The elevation o operator desire merely to release the pressure rolls 10,he will shift the pawl 21 by ting the pawl at 24: to permit longitudinalmovement thereof relatlve to the pivot 23 and providing the pawl with arack 27 engaging a stud 31 connecting the link 14 and arm 15, which studnot only arrests the pawl, but-maintams'lt in arrested position. Thus,

in throwin the pawl from one position to the other, its is first drawnendwise to permit'thetoothof the rack 27 to clear the stud 31, afterwhich the pawl is, swung toward or from the ratchet wheel, to bring thenext notch of its rack over the stud, a spring 28 yieldingly holdingthepawl in shifted position. v

The link. 14 may carry a cain'or shoulder 29 cooperating with the axle 2of the platen 1 during the-upward travel of the link 14, to throw thepawl 21 away from the ratchet 22 to ermit the latter to be rotated byhand -i desired, the link 14 also having the usual hook or cam30.engaging the top of the axle -2 to return the pawl 21 toward theratchet 22, as shown in Fig. 2.

, Variations may be resorted to within the sco e of the invention.-

'aving thus described my invention, I- claim: 4

.1. In a typewriting machine, the combination with a revoluble platenand a pressure rollto run thereon, of a tallystrip mechanism includingastrip-winding ratchet wheel,

a release key connected to the pressure roll to release it from thelaten, a pawl operated by'said rele'asel ey to engage said ratchet wheelto wind the tally strip, and

- means for rendering said awl meflfectlve.

2. In a'typewriting mac ine, the combina-.

.tion with a revoluble platen and a pressure roll .torun thereon, of atally strip mechanism including a strip-winding ratchet wheel, a releasekey connected to the'pressure roll to release it from the platen, a pawloperated by said release key to engage said ratchet wheel to wind thetally strip, the pawl be-- ing-adjustable to'occupy anloperative or anid e relation to-t-he ratchet wheel.

3.. In a typewriting machine, the combinathe key 12 returns g the partsto inactive positions. Should'the release from the tion with a revolubleplatenand a pressure roll to run thereon, of a tally strip mechan-' ismincluding a strip-winding ratchet wheel,

release key connected to the pressure roll to release it from theplaten, a pawl operated-by said release ey to engage said ratchet, wheelto wind the tally strip, the pawl being adjustable to occupy an opera-4. In a typewriting machine; the combination with a revoluble platen anda pressure roll to run thereon, of a tallystri mechanism including astrip-winding ratc et wheel a release key connected to the pressure rollto release it from the platen, a ivotally supported pawl operated bysaid re ease key to engage said ratchet wheel to wind the tally strip,the pawl being adjustable to assume an idle or an operative relation tothe ratchet wheel, and a s ring for maintaining the pawl in adjusteposition.

5. In a typewriting machine, the combina tion with a revoluble. platenand .a pressure roll to-run thereon, of a tally strip mechanismincluding a strip-windin ratchet wheel,

a release key, a link connection between therelease key and pressureroll to effect its platen, a pawl pivoted on the link for ad ustmentrelative to the ratchet wheel, ,means to arrest the throw of the pawl tooperative and inoperative relation to the ratchetyand means formaintaining the pawl inadjusted position.

6. In a typewritmg machine, the-combination with a platen and a pressureroll to run thereon, of a tally strip mechanism including astrip-winding ratchetwheel, a release key, a link connection between thekey and pressure roll. to efi'ect-its release from the platen, a pawladjustable on the link relative to the ratchet wheel, and means fordetaining the pawl in either of its positions.

ratchet, a relatively stationary member re ceived in the notches of therack, and a spring for yieldingly maintaining the en'- gagemeht of therack and member to hold the pawl in adjusteglposition.

VEUS G. SMITH. Witnesses:

Frances A. Hoovnn, I

R. J. JAN'I'ZEN.

for con trolling its throw toward and from the

